100 new Starline brass in 44-40 44-40 Winchester Brass, 44-40 Win Brass, 44 Win Brass, 44-40WCF Brass, 44 Winchester Brass, 44-40 Marlin Brass 1.294 - 1.300 O.A.L. Also known as the .44-40 Winchester, .44 WCF, and .44 Winchester, this caliber gained popularity because of its availability in both rifles and handguns. The advent of Cowboy Action Shooting has helped to revive this obsolete vintage cartridge. Our .44-40 brass has a wall thickness of .0065" but is still stiffer and less fragile than other brands, which makes it much easier to reload.